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Potato stems and leaves are plant resources of high additional value. Potato stems and leaves contain not only some nutritional ingredients, such as protein, dietary fiber, vitamins, minerals, but also some active ingredient, such as phenolic compounds, polysaccharides, solanesol. Therefore, they have good antitumor, antibacterial, hypoglycemic, antioxidant activity and immunoregulation. The expositions of the nutrition and active ingredients, biological activities of common potato stems and leaves are to raise the awareness of the importance of potato stems and leaves, which provides some references for the effective utilization and industrialization of common potato stems and leaves.